Real estate brokerage founded by twin San Diego State Construction Engineering graduates — Rory Cornelius carries DRE 02161116 and operates the group under eXp Realty — with Cornelius Estates dividing its practice between multifamily underwriting and residential transactions across San Diego County. Engineering-trained valuation translates directly to apartment-building analysis and the rehab-cost estimates that Moore Quality Builders produces during due-diligence walkthroughs on 2-to-10-unit OB properties. Off-market sourcing runs through door-knocking, neighbor calls, and paid Facebook and Google campaigns — channels most agents skip but that matter when listings on Ebers, Cape May, and Saratoga rarely hit the MLS before selling. Rent rolls, cap-rate worksheets, and Proposition 8 assessment-appeal paperwork assembled at listing give investor buyers the documentation needed when they challenge overassessed values through property-tax firms — the same filings RPC Property Tax Advisors LLC relies on to prosecute appeals before the San Diego County Assessment Appeals Board. Prior $100M-plus construction project management work means the Cornelius team reads plans, spots unpermitted additions behind Sunset Cliffs bluff lots, and calculates true post-repair value on 1920s OB cottages before presenting an offer. The hardest assignments are value-add multifamily repositioning — buying a tired 5-unit OB building, modeling unit-by-unit turnover, phasing capital improvements, and guiding a 1031 exchange into a larger property without vacancy loss between escrows.